!!FridgeBrilliance
* Why is Shiro a MeaningfulName, anyway? [[spoiler: Simple. There are two types of blood cells, white and red. Shiro's alter ego is the Red Man.]]
* Shiro's actions in the Dog Race make a lot more sense knowing that she has a HealingFactor. She was deliberately triggering traps in order to disarm them because they couldn't do any real damage to her. She wanted Ganta to go for the ball rather than saving her because he needed the Cast Points, and while being impaled by those spikes would hurt, [[GoodThingYouCanHeal she'd survive it and be back to her old self in no time.]] Of course, Ganta knows none of this.
** [[spoiler:Though the fact that Shiro is a DeathSeeker lends itself to the alternate interpretation that the act of triggering those traps were suicide attempts.]]
** Similarly, in episode 7 we see that [[spoiler: Ace-Man wore a costume that's stunningly similar to the outfit Shiro wears while in the Red-Man personality. Shiro proclaiming to be Ganta's Aceman makes a whole lot of sense now]].
* Nagi's bare-handed slaughter of [[spoiler: the Undertakers two years ago]] is most likely the reason the anti-Branch of Sin weapons [[spoiler:Genkaku]] and the others used were developed.
* Minatsuki's decrease in antagonism in later chapters. If her more unsavory habits were a result of trying to keep people at arms' length or for manipulative purposes, then it makes sense she'd lose them as she reconnected with her brother and became friends with Ganta. She's no longer actively ''trying'' to keep everyone away.
* The infamous formaldehyde line is not merely about Minatsuki sadistically taunting Ganta. She is, in her own cruel way, teaching Ganta the truth about what happens to lovers in Deadman Wonderland, a truth that Nagi learned the hard way: They have no qualms about forcing you to fight the one you love to the death and killing anyone who refuses, and even your children are fair game for experimentation. In turn, it reveals another aspect of Minatsuki's psyche: Not only is she convinced that no one can be trusted, she quite reasonably believes that it's pointless to even try to allow herself to love as long as she's in Deadman Wonderland.
* In Chapter 42, [[spoiler:Wretched Egg]]'s sad smile right before Ganta's [[AbnormalAmmo blood bullets]] make impact makes much more sense once you read [[WhamEpisode Chapter 55]]. [[spoiler:Shiro's a DeathSeeker, and Ganta is [[TheOnlyOneAllowedToDefeatYou The Only One Allowed To Defeat Her]].]] Too bad it was a NoSell thanks to [[spoiler:her HealingFactor]].
* Why was [[spoiler: Rokuro's VillainousBreakdown so over the top? Because his ''entire character'' is a parody to [[Manga/DeathNote Death Note's]] own AxeCrazy protagonist [[VillainProtagonist Light Yagami!]] Since Light's own VillainousBreakdown [[SignatureScene is stuff]] [[MemeticMutation of legend,]] it's only natural that they try to out do the original!]]
** It gets even better. [[spoiler: You know how Light was [[DissonantSerenity completely calm,]] and had a MaskOfSanity that instantly disintegrated as soon as things didn't go as he planned? ''Rokuro is the exact same way.'' Only amplified to the point where it becomes absolutely hilarious.]]
* Has anyone noticed that in the beginning and end of Ganta's powers there is a large sign of deadman wonderland falling on both him and shiro. Also note how both Shiro and Ganta's positions are different in both cases. In one he is above Shiro while in the other he is below. Minor, right? Well, it could show the change in his mindset. From killing the Red Man to Shiro.

* During a flashback in chapter 55, we see Tamaki present during the construction of Deadman Wonderland, meaning he must've gotten into contact with the Director shortly after the quake. We know from chapter 38 that Tamaki [[spoiler: was shut-in NEET that wouldn't have the experience or skills necessary for such a high ranking position in the facility and would never get the job under normal circumstances, on top of his (correct) theory that the Tokyo Earthquake was man-made and goal of killing the perpetrator, making him an extremely risky hire.]] Knowing all this, why would the Director get Tamaki on board so early into Deadman Wonderland's development? He was KeepingTheEnemyClose. By having Tamaki under his nose constantly, [[spoiler: he could keep his suspicions and aspirations under control by feeding him false data on the Wretched Egg, satisfying his curiosity while making sure he could never stop her, which after chapter 38 we know pays off.]]

!!FridgeHorror (as if this series wasn't disturbing enough)

* [[spoiler: The fact that there is no SplitPersonality to Shiro means that not only was Shiro completely aware of the mass murder she committed and framed Ganta for, but that Ganta wants to spend his life with the {{Yandere}} stalker who murdered his last girlfriend, the rest of his classmates and his teacher and then framed him for the crime. In retrospect, Ganta/Minatsuki seems like a healthy relationship in comparison.]]
* [[StuffedInTheFridge Mimi]] died in the first issue/episode with her [[DiesWideOpen eyes open]], her face fixed in an expression of absolute horror. This means that the Red Man killed her last, and possibly made her watch every traumatizing second of the carnage. She died in a state of sheer terror.
** [[spoiler:It gets so much worse when you remember that there was no 'Wretched Egg' personality; this was the same bubbly, happy Shiro we see later that same issue/episode, and that she and the bloodthirsty, AxCrazy Wretched Egg are one and the same.]]
** No what really makes it creepy is this:[[spoiler: Shiro is {{Yandere}} and wanted to not only MurderTheHypotenuse but [[KickThemWhileTheyAreDown to essentially taunt her before she died]].]]
* During the series' start Ganta is attacked and berated by the father of his best friend, who's murder he was framed for. The public eventually becomes aware of how he and many other people at the prison were framed, so that man not only has to deal with the fact that his daughter's killers are still at large but he unintentionally added to the trauma of a completely innocent person.
* Chapter 43. That scene with Hagire and Wretched Egg, where Wretched Egg [[spoiler:was lying naked on her bed after having just fought Ganta. Hagire just walks in, and begins [[{{Squick}} touching her naked body]] while she casually describes her latest fight with Ganta, completely unfazed, and almost seems '''okay''' with it. Begging the question of just how used to this kind of thing she is.]]
** It's even worse in hindsight, thanks to [[WhamEpisode Chapter 55]]. [[spoiler:The Wretched Egg in the sense of it being a SuperpoweredEvilSide never existed; that was Shiro, just as it always had been.]]
* In episode 5, [[spoiler:After losing, Crow has his right eye removed for losing the match. NightmareFuel aside, look at the gambling machine: it happens to have other options such as hand, stomach, tongue, etc. What happens if it lands on one of those?!]]

''Deadman Wonderland'' even has characters that fill out each of the Tarot Card Motifs:
* 0 — The Fool: Shiro.
* I — The Magician: Ganta.
* II — The High Priestess: Minatsuki.
* III — The Empress: Makina.
* IV — The Emperor: Necro Macro.
* V — The Hierophant: Rinichirō Hagire.
* VI — The Lovers: Chan and En
* VII — The Chariot: Yoh.
* VIII — Strength: Karako.
* IX — The Hermit: Senji.
* X — The Wheel of Fortune: Toto.
* XI — Justice: Daida.
* XII — The Hanged Man: Nagi.
* XII — Death: Azuma
* XIV — Temperance: Kasuga.
* XV — The Devil: Tamaki.
* XVI — The Tower: Rokuro.
* XVII — The Star: Sorae Igarashi.
* XVIII — The Moon: Azami.
* XIX — The Sun: Idaki.
* XX — Judgement: Yosuga.
* XXI — The World: The Red Man/The Wretched Egg.